Elevator gate and latch



Dec. 19, 1939. T. PATIN ELEVATOR GATE AND LATCH Original Filed July 19,1923 2 Sheets-Sheet 1 Fly. 3

Fly. 1

Dec. 19, 1939. pA-nN 2,183,582

ELEVATOR GATE AND LATCH Original Filed Jul 19, 1925 2 Sheets-Sheet 2Fly. 5

Triwa'dew Pail Patented Dec. 19, 1939 ELEVATOR GATE AND LATCH ThaddeusPatin, Anaheim, Calif., assi nor to Byron Jackson 530., a corporation ofDelaware Refiled for abandoned application No.

652,600, July 19, 22, 1838, Serial 8 Claims.

This invention relates to an elevator for oil well casing, pipe and thelike having a hinged gate or door and means to lock the gate in closedposition. In elevators or" the character described, it is commonpractice to provide the body with a hinged gate whereby the body may beplaced about the work and the gate closed and locked in closed position.This invention appertains particularly to the latching and lockingmeans. It is the primary object thereof to provide a gate structurewhich will automatically lock on being closed and will be maintainedsecurely in locked position while supporting the work. Lo addition tothe broader objects of this invention, there are certain details ofdesign whereby a simple, strong, and durable structure is obtained.

These objects together with other objects and correspondingaccomplishments are obtained by means of the embodiment of my inventionillustrated in the accompanying drawings, in which:

Fig. 1 is an elevation of a complete elevator constructed in accordancewith my invention; Fig. 2 is a section as seen on the l ne 2-2 of Fig. 1showing the gate in closed position; Fig. 3 is an enlarged fragmentarysection as seen on the .line 3-3 of Fig. 2; Fig. 4 is an enlargedfragmentary section as seen on the line 4-4 of Fig. 2; Fig. 5 is asection similar to Fig. 2 showing the gate in slightly open position;Fig. 6 is a view similar to Fig. 4 showing the latch just closing; andFig. 7 is a View similar to Figs. 4 and 6 showing the latch opening.

Referring more particularly to the drawings, an elevator is shown havinglinks permanently attached thereto. However, a construction withdetachable links may be used if desired, the means of attaching thelinks forming no part of the present invention. The body of the elevatoris indicated by ID, and it is provided with ears II and !2 to which thelinks 63 may be attached in any suitable manner. The body has lugs 5extending from one side thereof which are provided with openings toreceive a hinge pin i Formed in the body of the elevator adjacent to thelugs M are keeper recesses 15 and H to receive projections formed on thegate later described. At the opposite sides of the body are keeperrecesses l8 and E9 to receive corresponding projections on the gate.Formed in the body between the recesses I8 and I8 is a recess 2a toreceive a latch pin for locking the gate in its closed position.

A gate 2| is provided with lugs 22 having openings for receiving thehinge pin IS. The lugs 22 application March are so spaced with referenceto the lugs l4 that the gate may be moved upwardly and downwardly on thehinge pin. Formed on the gate adjacent the lugs are bevelled projections23 and 2d engage in the keeper recesses 16 and respectively. At theopposite edge of the gate are projections 2.5 and 25 to engage withkeeper recesses i8 and 19 respectively. As the gate is svmng from theopen position shown in dotted lines in Fig. 5 to the closed positionshown in full lines, the bevelled faces of the projections engage thekeepers and ride upwardly moving the gate upwardly to the position shownin Figs. 6 and '7. Finally th gate by reason of its weight movesdownwardly so that the projections and keepers in the position shown inFigs. 1, 2, 3, and 4. The weigh of a collar or pipe resting upon theelevator will hold the gate in closed position. However, the elevatormay be moved downwardly, and to avoid trouble due to the gate opening alatch is provided. Mounted upon the gate are ears 2'! between which ispivoted a latch 28 of angular form. The latch has a pin 29 disposed toenter an opening in the gate 2i and when the opening is in registrationwith the recess 20 to move into the recess as shown in Fig. 4, therebylocking the gate against upward and disengagposition of the projectionsand keepers. A zinger 39 is so disposed that it may engage the top ofthe body. A handle 3! is provided so that the latch may be operated.

Assume that the gate is closed and in the position shown in Figs. 1, 2,3, and 4. When it is desired to open the gate, handle 3| is grasped andpulled upwardly. Pin 29 is thus moved out of the opening, finger 39engaging the top of the body and assisting in lifting the gate into theposition shown in Fig. 7, in which position the projections and keepersare disengaged. The pull outwardly upon the gate will swing the latterinto the position shown in dotted lines in Fig. 5. To lock the gate thelatter is swung or slammed into closed position.

This application is refiled for my abandoned application Serial No.652,600, filed July 19, 1923.

I claim:

1. An elevator comprising a body, a gate hinged thereto so as to permitlimited axial movement, a bevelled projection on said gate, said bodybeing provided with a keeper for said projection, said projection beingso shaped as to be disengageab only upon upward movement of said te.gate and body being provided with open ings registering when the gate isclosed, and a pin pivotally mounted on said gate and disposed to entersaid openings and lock said gate when closed against upward openingmovement.

2. An elevator comprising a body, a gate hinged thereto so as to permitlimited axial movement, bevelled projections on both jambs of said gate,said body being provided with keepers for said projections, said keepersand projections being so shaped as to be disengageable only upon upwardmovement of said gate, said gate and body being provided with openingsregistering when the gate is closed, and a pin pivotally mounted on saidgate and disposed to enter said openings and lock said gate when closedagainst upward opening movement.

3. An elevator comprising a body, a gate hinged thereto so as to permitlimited axial movement, a bevelled projection on said gate, said bodybeing provided with a keeper for said projection, said gate and bodybeing provided with openings registering when the gate is closed, and alatch pin pivotally mounted on the upper part of said gate and disposedto enter said openings and lock said gate when closed against upwardunlatching movement, said latch pin having a finger overhanging saidbody whereby on withdrawing said latch pin from said openings the latchpin acts as a lever to raise said gate.

4. An elevator comprising a body, a gate hinged thereto so as to permitlimited axial movement, bevelled projections on both jambs of said gate,said body being provided with keepers for said projections, said gateand body being provided with openings registering when the gate isclosed, and a latch pin pivotally mounted on the upper part of said gateand disposed to enter said openings and lock said gate when closedagainst upward unlatching movement, said latch pin having a fingeroverhanging said body whereby on withdrawing said latch pin from saidopenings the latch pin acts as a lever to raise said gate.

5. An elevator comprising a pair of jaws connected for relativehorizontal swinging movement and for relative vertical movement,interengaging means on the jaws for locking the latter against relativehorizontal movement, said means being disengaged by relative verticalmovement between the jaws, latch means for locking said jaws againstrelative vertical movement, and common manually operable means on one ofsaid jaws for releasing said latch means and thereafter moving one ofsaid jaws vertically to release said interengaging means.

6. In a device of the class described, a pair of pipe-engaging jaws,means connecting the jaws for relative pivotal movement and for relativemovement in a plane including the pivotal axis, means for preventingrelative pivotal movement between said jaws comprising a recess in onejaw and a lug on the other jaw engageable with said recess andreleasable therefrom upon relative movement in the aforesaid plane, alatch for preventing said last-mentioned movement, and a single manuallyoperable means for releasing said latch and thereafter moving one ofsaid jaws in the aforesaid plane to release said lug from said recessand permit relative pivotal movement between said jaws.

7. A well tool comprising a pair of jaws adapted to be closed about avertical pipe, means connecting the jaws for horizontal opening andclosing movement and for relative vertical movement, interlocking meanson said jaws for preventing opening movement thereof and releasable uponrelative vertical movement between said jaws, a latch mounted on one ofsaid jaws and engaging means on the other jaw for preventing saidvertical movement, and means associated with said latch and operable oninitial movement thereof to release said latch and operable on continuedmovement thereof to move one of said jaws vertically to release saidinterlocking means and permit said jaws to open.

8. A well tool comprising a pair of pipe-engaging jaws connectedtogether for relative movement both horizontally and vertically,interengaging means on the jaws for locking the latter against relativehorizontal movement and being releasable upon relative verticalmovement, a latch on one jaw engageable with means on the other jaw forpreventing relative vertical movement, cam means on one jaw engageablewith a surface on the other jaw for efiecting relative vertical movementbetween the jaws, and common manually operable means associated withsaid latch and said cam for first releasing said latch and thereafteroperating said cam to release said interengaging means and permit saidjaws to open.

THADDEUS PATIN.

